Bobbin and bobbin reenforcing means



L. c. BALDWIN 1,893,320

BOBBIN AND BOBBIN REENFORCING MEANS Filed Aug. 5. 1929lllIIIllllllIllIIIIIIIIIIIIHIIIIIIIIHIlllllllllllllllllllllllllllllllllllll f *mm MINI I .lle/eazlaz E.Lzoikea 6% Bmyiwv Patented Jan. 3, 19 33 UNITED STATES PATENT OFFICE;lLUTHERC. BALDWIN, or rnovrnnnon, n-HonE rsminn, lassienora TO U. s.nonnrn a SHUTTLE COMPANY, or PROVIDENCE, anonn. ISLAND, A CORPORATION orRHODE ISLAND BOBIBIN AND BOBBIN REENFORGING MEANS Application filedAugust 5, 1929. Serial No. 383,765.

This invention pertains to bobbins and bobbin reenforcing means, andwhile herein forconvenience illustrated as embodied in a wooden spinningbobbin, it is equally applicable to yarn supports such as bobbins,tubes, or the like of other materials, for example paper, indurated.fiber, etc, and whether designed primarily for spinning'or for otherpurposes. V

As illustrated in the patent to Baldwin et al. No. 1,145,662, July 6,1915', it has heretofore been proposed to provide a bobbin with areenforce ferrule comprising inner and outer flanges engagingthe innerand outer surfaces respectively of the bobbin, but I findthatbetterresults both from the stand point of durability and economy ofmaterial, can be obtained in accordance with my present inventionwherein, while the inner -flange of the ferrule is still retained, Isubstitute for the long flange, which in the old construction embracedthe outer surface of the bobbin, a relatively short-flange, concentricwith the inner flange and which is seated in an an-: nular groove in theend ofthe bobbin body. Thisnew arrangement requires less material thanthe old, it furnishes adequate protection for the inner edge of the bodywhere protection is most needed, and provides a ready means for securingthe reenforce ferrulesecurelyand permanently in place so that it can notcome off of the bobbin body or turn relatively thereto,

In the accompanying drawing, wherein I have illustrated certaindesirable embodiments of the invention by way of example:

7 Fig. 1 is a fragmentary side elevation, partly in section,illustrating a spinningbobbin provided with one desirable :form of myimproved reenforce bushing; V.

Fig. 2 is a bottom plan view of the bobbin ofFig.1; fi

r Fig. 3 is aviewgenerally similar to Fig. 1 but showing a modified formof reenforce bushing;

Fig. 4 is a bottomplan view. of the bobbin ofFig.3; i

Fig. 5 is a view similarto Fig. 3 but showing a further modified form ofbushing;

shown in Fig. 6 is a bottom plan view of the device Fig. 5; i

Fig. 7 is a fragmentary sectional view, to

larger scale, illustrating certain steps inthe preparation of the bobbinfor the reception ofmy improved ferrule;

Fig. 8 1s a vertical section showing the ferrule of Fig. 3 beforeapplication tothe bobbin; I

Fig. 9 is a further form of ferrule; V .Fig. 10 is aside elevationillustrating an other form; v y

Fig. 11 is a side elevation illustrating still another form of ferrule;Fig. 12 is a side elevation ofa similar rule but with a slightmodification; and Fig. 18 is a side elevation of the ferruleshowninFigs.5and6.

Referring to the drawing, the numeral l indicates a spinning bobbin ofusual type and which maybe made of wood or other suitable material andhaving the lower end or base ferportion 2 which is of larger diameterthan In preparation for the application of 8,; Y

im roved reenforce ferrule I provide an annular groove G. Fig. '7. inthelowerend ,of the base 2 of the bobbin, such .groo've being concentricwith the axis of the bobbin and intermediate the inner and outersurfaces of the base 2. At the inner side of this groove I preferablycut away the bobbin to provide a rabbeted surface S, and preferablybIut'not vertical section illustrating a necessarily I" provide anannular recess Rin the wall ofthe bore at a distance from the surface Ssubstantially equal to the length of the inner flange of the ferrule."Inac'cordance with one embodiment of my invention I provide a reenforceferrule (Fig. 1) having a portion 5 which is adapted to seat against Q7F'having teeth'1'6 and 17 respectively at their the under surface S(Fig. 7) of the bobbin and which has the inner and outer flanges 6 and 7which initially are substantially cylindrical and concentric. The innerflange 6 is of such diameter as to enter the bore with a close ordriving fit and of such axial length that when. assembled. with thebobbin, its upper edge 9 may be spun or otherwise turned inwardly intothe recess R if such be provided, or if the recess be omitted, then themetal may be pressed into the woodsufriciently to make it secure. Theouter flange 7 may be made shorter than the inner flange and is adaptedto seat with a driving fit in the annular groove G. In assembling theparts, the flanges. 6 and. 7 are first forced into the bore and groove Grespectively and then a part or all ofthe upper edge 9 of the flange 6is turned outwardly, thereby securely retaining the ferrule in positionto prevent relative axial movement of the ferrule and bobbin. Thefrictional "resistance of the flange 7 in the groove G may in most casesbe depended'upon to prevent relative -rot a tion of the parts.Preferably the'ferrule is applied to the bobbin before the slots 4 arecut, and these are then. suitably formed, as by a milling operation,which simultaneously cuts outportions of the metallic ferrule and thebody of the bobbin proper.

In Figs. 3, e and 8 I have illustrated a modified construction in whichthe upper edge of the inner flange 6 is provided with teeth 10, whilethe outer flange 7 is substantially the same as that shown in Fig. 1. Inthis arrangement the teeth of the inner flange, when the'parts areproperly assembled, may remain substantially straight, being embedded inthe shoulder 12.0f the bobbin, or they may bend outwardly upon strikingthe shoulder orbe bent by a suitable tool, while the outer flange7*"fits snugly, as above described, in the annular groove. Gin the endof the bobbin. If desired,.and in order to obtain still furtherresistance to separation or relative movement of the parts, I mav strikeinwardly small sections 13 of the ferrule, as shown in Figs..3 and 5, soas to form detents or teeth projecting radially outward into thesubstance of the bobbin base.

, As shown, in. Fig. 11, I. may, ifdesi'red, provide the ferrule with aninner flange 6 of the type shown in Fig. l and an outer flange 7'whose'surf'ace, either inner or outer or both, is roughened, as forexample by providing it with longitudinal ribs or cor rugations.

In the modification shown in Fig. 10'the ferrule has the inner andouter'flanges 6 and upper edges. In Fig. 12 I have-illustrated astill-further modification-in which the ferrule is-furnishedfwiththeinner flange 6 having teeth: 18 at it's upper edge,ow-hile the outerflange-7 has corrugations l9lsimilar tothe corrugations 14: of Fig. 11.In Fig. 13 a still further modification is shown wherein the innerflange 6 has the teeth 20 at its upper end, while the outer flange 7 ghas teeth at its in the bobbin, and the teeth 20 at its-upper end maythen be spun outwardly into the recess R and become embedded in thebobbin, while the ribs or corrugations 21 become embedded inthe walls ofgrooveG. V

. Allofz the arrangementsthus disclosed provide. resistance in varyingdegree against separation or; relative movement of the ferrule and thebobbin while at the same time furnishingproper protection for the inneredge of the bobbin and resisting splitting of the latter, while theferrule thus produced requires much less material in itsconstructionthan. the ferrule disclosed in the patent above referredto.a

' While I have illustrated certain desirable modifications of theinvention, I wish it to be understood that. it' is not necessarily limitedv thereby, but that equivalent arrangements may be substituted forthose herein disclosed without departing from'the invention.

Iclaimu 1. A- bobbin having.- a longitudinal bore andan annular grooveinits end, and a re.- enforce ferrule comprising concentric flanges oneof which fits within the bore of the bobbin and the other of which isseated in the groove in theend of the bobbin, and means providinginterengaging projections extending along the surface ofat least one ofsaid flanges substantially axially of the bobbin and between the latterand the last-mentioned flange to prevent relative rotation of the bobbinand ferrule.

2. A bobbinhavinga longitudinal bore and an annular groove in its end,and a reenforce ferrule comprising spaced concentric flanges, oneofwhich fits into the bore of the bobbin and the other into said annulargroove, one of said flanges comprising means engaging the bobbin toprevent relative endwise'movement of .the bobbin and ferrule, and theother of said flanges having'peripheral corrugations to prevent relativerotation of the bobbin andferrule. 4

3. A bobbin having an axial bore and an annular groove in its end, and areenforce ferrule comprising inner and outer spaced concentric flanges,the inner flange fitting in the bore and the outer flange in the groove,the inner edge of the inner flange being turned outwardly into an.annular recess in the inner surf'aceof the bobbin, and the outer flangebeing peripherally ribbed to prevent relative rotation of the bobbin andferrule.

A. A bobbin having an axial bore and an annular groove in its end, and areenforce ferrule comprising spaced inner and outer concentric flanges,the inner flange fitting in the bore and having teeth at its inner endturned outwardly and embedded in the bobbin, the outer flange fitting inthe groove and having teeth at its inner end embedded in the bobbin,said outer flange also being corrugated and having a driving fit in saidgroove.

5. A reenforee ferrule for bobbins comprising radially spaced inner andouter flanges, one of said flanges having a peripherally ribbed surfacefor engagement with the bobbin to prevent relative rotation between theferrule and the bobbin.

6. A reenforce ferrule for bobbins comprising radially spaced inner andouter flanges, the inner flange being of greater axial length than theouter flange, and the outer flange having a peripherally ribbed surfacefor engagement with the bobbin to prevent relative rotation between theferrule and the bobbin.

Signed by me at Providence, Rhode Island this thirty-first day of July1929.

LUTHER G. BALDWIN.

